Fine tuning of auxin signaling by miRNAs

Teotia, Preeti Singh; Mukherjee, Sunil Kumar; Sanan-Mishra, Neeti

doi:10.1007/s12298-008-0007-1

Cited by 18 publications

(8 citation statements)

References 110 publications

(129 reference statements)

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“…Among the down-regulated miRNAs, the members of MIR390, MIR396 and MIR395 families were most abundant. It was shown for other plant species, that these miRNAs are engaged in the regulation of auxin signal transduction pathway (miR167 and miR390 [108]), regulation of cell division (miR396 [100]) and stress response (miR395 [81,82]).…”

Section: Discussionmentioning

confidence: 99%

Integrated Analysis of Small RNA, Transcriptome and Degradome Sequencing Provides New Insights into Floral Development and Abscission in Yellow Lupine (Lupinus luteus L.)

Glazińska

Kulasek

Glinkowski

et al. 2019

IJMS

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The floral development in an important legume crop yellow lupine (Lupinus luteus L., Taper cv.) is often affected by the abscission of flowers leading to significant economic losses. Small non-coding RNAs (sncRNAs), which have a proven effect on almost all developmental processes in other plants, might be of key players in a complex net of molecular interactions regulating flower development and abscission. This study represents the first comprehensive sncRNA identification and analysis of small RNA, transcriptome and degradome sequencing data in lupine flowers to elucidate their role in the regulation of lupine generative development. As shedding in lupine primarily concerns flowers formed at the upper part of the inflorescence, we analyzed samples from extreme parts of raceme separately and conducted an additional analysis of pedicels from abscising and non-abscising flowers where abscission zone forms. A total of 394 known and 28 novel miRNAs and 316 phased siRNAs were identified. In flowers at different stages of development 59 miRNAs displayed differential expression (DE) and 46 DE miRNAs were found while comparing the upper and lower flowers. Identified tasiR-ARFs were DE in developing flowers and were strongly expressed in flower pedicels. The DEmiR-targeted genes were preferentially enriched in the functional categories related to carbohydrate metabolism and plant hormone transduction pathways. This study not only contributes to the current understanding of how lupine flowers develop or undergo abscission but also holds potential for research aimed at crop improvement.

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Section: Discussionmentioning

confidence: 99%

Integrated Analysis of Small RNA, Transcriptome and Degradome Sequencing Provides New Insights into Floral Development and Abscission in Yellow Lupine (Lupinus luteus L.)

Glazińska

Kulasek

Glinkowski

et al. 2019

IJMS

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“…Novel putative target genes have been identified and most of them are involved in stress and hormone response. Indeed, the role of plant miRNAs in abiotic and biotic stress response as well as in auxin signalling is well known [ 32 , 33 ]. In particular, protein kinases such as protein kinase C and serine/threonine kinase, known to be important regulator on abiotic stress resistance, are largely present in novel microRNA/target pairs identified.…”

Section: Discussionmentioning

confidence: 99%

A computational-based update on microRNAs and their targets in barley (Hordeum vulgare L.)

et al. 2010

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BackgroundMany plant species have been investigated in the last years for the identification and characterization of the corresponding miRNAs, nevertheless extensive studies are not yet available on barley (at the time of this writing). To extend and to update information on miRNAs and their targets in barley and to identify candidate polymorphisms at miRNA target sites, the features of previously known plant miRNAs have been used to systematically search for barley miRNA homologues and targets in the publicly available ESTs database. Matching sequences have then been related to Unigene clusters on which most of this study was based.ResultsOne hundred-fifty-six microRNA mature sequences belonging to 50 miRNA families have been found to significantly match at least one EST sequence in barley. As expected on the basis of phylogenetic relations, miRNAs putatively orthologous to those of Triticum are significantly over-represented inside the set of identified barley microRNA mature sequences. Many previously known and several putatively new miRNA/target pairs have been identified. When the predicted microRNA targets were grouped into functional categories, biological processes previously known to be regulated by miRNAs, such as development and response to biotic and abiotic stress, have been highlighted and most of the target molecular functions were related to transcription regulation. Candidate microRNA coding genes have been reported and genetic variation (SNPs/indels) both in functional regions of putative miRNAs (mature sequence) and at miRNA target sites has been found.ConclusionsThis study has provided an update of the information on barley miRNAs and their targets representing a foundation for future studies. Many of previously known plant microRNAs have homologues in barley with expected important roles during development, nutrient deprivation, biotic and abiotic stress response and other important physiological processes. Putative polymorphisms at miRNA target sites have been identified and they can represent an interesting source for the identification of functional genetic variability.

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“…In auxin signaling pathway, some auxin response factors (ARFs) are showed as targets of miRNAs. ARF6 and ARF8 are the targets of miR167; ARF10, ARF16, and ARF17 are regulated by miR160 [135,136]. Additionally, miR160 and miR167 are reported as important players in drought and ABA response, indicating miRNAs and their targets are essential players during the cross talk among various environmental cues [137,138].…”

Section: Dicing Bodiesmentioning

confidence: 99%